Abstract
In this paper we present a detailed discussion of the birefringent filter design strategy and the experimental performance characteristics obtained for a PPLN synchronously pumped OPO operating with birefringent filter tuning in the 1.3 -1.9 /spl mu/m region, with pulse duration of /spl sim/4 ps. We have adopted a four-plate birefringent filter design in order to strongly suppress the subsidiary maxima, with plate thicknesses of 1.5 mm, 3 mm, 6 mm, and 12 mm. The transmission characteristics of this four-plate birefringent filter design were calculated to model the height of the subsidiary maxima and their dependence on the birefringent filter rotation angle.
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